Cognomen Холер (Hohler 
, Холер 
) , worldwide, is quite a rare last name. The cognomen Холер is habitual in Slovenia, where it is quite a rare surname, Switzerland, and Germany, where it is a rare surname. Not in comparison with a country's population, it is commonest in Germany, the United States, and Switzerland. Very seldom, Холер is the forename as well as the last name.